Wood-heel-making machine



R. F. KNIGHT WOOD HEEL MAKING MACHINE Filed Ju1y 19, 1928 April 22,1930.

- Figl.

Patented Apr. 22, 1930 nALPH F. KNIGHT, OF BEVERLY,

OHINERY CORPORATION, OF PATERSON,

JERSEY MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MA- NEW JERSEY, ACORPORATION OF WOOD-HEEL-MAKING MACHINE Application filed. July 19,1928. Serial No. 294,007.

This invention relates to machines for use in making wood heels. In themaking of wood Louis heels, especially, it is generally necessary toinsert a wooden dowel running from the top-lift receiving face of theheel toward its attaching face to avoid danger of breaking the long thinwaist of the heel in wear. This dowel is glued in a hole which has beenformedin the heel block by means of an ordinary drilling machine, theheel being suitably gaged and supportedunder the drill and held againstmovement by the operators fingers. This results in occasional injury tothe operator and in continual loss of time, as the operators other handis engaged in operating the drill, and he is unable to reach out foranother heel until the one in the machine is finished.

7 It is an important object of the present invention to provide amachinein which a heel may be conveniently, efficiently and automatically gagedand held for drilling or other treatment.

I have, therefore, provided a machine, illustrated as of the type havinga vertically reciprocating drill or other tool, with means forpositioning and gaging a heel relatively to the tool and a clampingmeans for a heel arranged to hold it firmly under the' drill or othertool and to'be automatically rendered operative or inoperative uponmovement of the tool toward or from the work.

The clamping means is preferably automatic and as illustrated isarranged to clamp the work resiliently, upon movement of the tool towardthe work, before the tool engages the work, and to be released, bymovement of the tool away from the work, after the tool is disengagedfrom the work. i

These and otherfeatures of the invention comprising various combinationsand arrangements of parts will be understood from the followingdescription of a preferred embodiment of the invention shown in thedrawings, in which Fig. 1 is a front view-of the machine;

Fig. 2 is a similar view of a part of the machine, the machine beingequipped with a different operating tool;

Fig, 3 shows the finished heel;

Fig. 4 illustrates the the curving operation; and

Fig. 5 is a plan view illustrating the gages.

The frame 10 of the illustrated machine carries a head 12 in which atool spindle 14 is mounted for rotation and vertical reciprocation. Thespindle 14 may be rotated in any convenient manner and is illustrated asprovided with a pulley for belt drive. and lowered by a handle 16, withsuitable rack and pinion gearing. The spindle 14 carries a collar 18, towhich is attached a screw 20 passing through a lug 22 on the head 12,and nuts 24, 26 on the screw limit the upward and downward movement ofthe spindle.

The frame 10 carries a bracket 28 on which is pivotally mounted at 30one end ofa table 32. The table 32 is adjustable about its pivot bymeans of a screw 34 and is held in adj usted position by a bolt 36 withsuitable lock nuts 38. A plate 40, having an extension 42, isfastened tothe other end of the table 32 by a bolt and slot arrangement, as, shown,in-such a manner as to permit vertical adj ustment of the plate 40. Alever member 44 is pivoted at 46 to the upper end of the plate 40, andat one of its ends has asliding connection with the upper end of a rod48, the lower end of which is pinned to the end of the extension 42. Aspring 50 surrounds the rod 48 between the members 42 and 44 and tendsto throw the member 44 counterclockwise (Fig. 1) around the pivot 46. Aclamp 'jaw 52, with a hole 54in it to permit vertic'al passage of a tool'56, shown as a drill in Fig. 1, is fastened to the inner end of thelever 44. A rod 58 is pivotedto this end of the lever 44 and extends upthrough a hole 60in the collar 18. A nut 62 on the rod 58 rests on thecollar. There is no nut on the rod below the collar so that the rod andcollar have a lost motion connection with each other. Thus, when thespindle 14 and collar 18 are raised by the'handle 16, they'will pull theinner end of the lever 44 through the rod 58 andraise the clamp jaw 52,compressing the spring 50, and vice versa. The spring 50 will, however,always be under substantial compression, in any position of the clampjaw machine arranged for It is raised 64; into the optimum verticalposition,

' permit the clamp 52. The nut 62 is preferably adjusted so that theclamp 52 will leave the work (it after the tool 56 has been pulledcompletely away from it, and will strike the work before the toolengages it.

Two gages are provided for, the heel 6a. The breast gage 66 is in theform of a flat bar arranged with its gaging side running across the heelfrom side to side, and is adjustable toward and from the heel by a boltand slot 68. This gage determines the fore and aft position of the heel,and also its horizontal orientation on the plate 32, by its contact withthe breast of the heel. A side gage 7 0, which is laterally adjustableby a bolt and slot connection 72, determines the lateral position of theheel, that is, tion perpendicular to the plane ofthe drawing. The gage70 is spaced from the table 32 to avoid contact with the sharp edgeforming tne junction of the attaching face and the lateral surface ofthe heel.

In use, the table 32 is tilted to the proper angle to bring the shank orwaist of the heel the plate i is vertically adjusted if necessaryaccording to the height of the heel in order to 52 to lie substantiallyflat on the top-lift surface of the heel, and the gages are adjusted to.bring the heel into proper position under the tool 56. The clamp 52 isheld in lifted position above the heel during these adjustments by therod 58 since the tool is raised. The operator then lowers the tool bythe handle 16, the spring expands somewhat, and the clamp 52' engagesthe work before the tool strikes it and presses it against the table 32by virtue of the spring 50 while the tool is in contact with it. Meanwhile the operator takes another heel and when the cut is finishedraises the tool again. After the tool leaves the work the clamp 52 isdisengaged and the operator then knocks the finished heel aside andinserts a new one, holding it with his fingers until the clamp 52 hasdescended upon it. y

In Fig. 2 the machine is arrangedfor a sea-Hoping operation commonlytermed the curving operation, which consists in trimming the toplift endof the breast of the heel, as shown at 74 in Fig. 3. To effect this amilling cutter 7 6 is substituted for the drill 56. The operation of themachine is the same as described above.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is: i

1. In a machine for making wood heels, a

vertically reciprocable tool, a table under the tool adjustable about ahorizontal axis to bring the shank of a Louis heel on the table into asubstantially vertical position, gages for orienting the heel andpositioning itsshank under the tool, a resilient clamping means arrangedto'e'ontaet with the upper surface ofthe heel, and a lost motionconnection between the tool and the clamping means whereby the liftingof the tool from the heel renders the clamping means inoperative.

2. In a machine for making wood heels, a reciprocable tool, a tableadjustable to tip a Louis heel on the table about an axis extendingtransversely of the path of reciprocation of the tool, gages fororienting the heel and positioning its shank under the tool, clampingmeans arranged to contact with the surface of the heel, and a connectionbetween the tool and the clamping means whereby the disengagement of thetool from the heel renders the clamping means inoperative. in a direc-3. In a machine for making wood heels, a vertically reciprocable drill,a table under the drill pivotable about a horizontal axis, a straightgage bar adjustable in a directionperpendicular to its length andarranged to contact with the breast of a heel on the table to orient itand'to gage it in a fore and aft direction, an adjustable side gage forgaging the heel laterally,- a pivoted clamping member arranged tocontact with the upper end of the heel to clamp it against the table, aspring for actuating the clamping member and tending to hold it alwaysin clamping position, and a lost motion connection between the clamping"member and the drill whereby the raising of the drill out of the worklifts the clampingmember from the work. r I 7.

l; In a machine for'making wood heels, a vertically reciprocable drill,a table under the drill pivotable about a horizontal axis,

a straight gage bar adjustable in a direction perpendicular to itslength and arranged to contact with the breast ofa heel on the table toorient it and to gage it in a fore and aft direction, an adjustable sidegage for gaging the heel laterally, a pivoted clamping member having avertically adjust-able pivot and arranged to contact with the upper endof the heel to clamp it against the table, a spring for actuating theclamping member and tending to holdit always in clamping position,

and a lost motion connection between the clamping member and the drillwhereby the raising of the drill out of the work lifts the clampingmember from the work.

In testimony whereof I have signed my name to this specification;

RALPH r. KNIGHT.

